Tree Allometrics

Equations / Foliage biomass

Quercus crassifolia foliage biomass

Foliage biomassQuercus crassifolia · FagaceaeMexiconaturalRead from the original paper
Photo of Quercus crassifolia
© Eugenio Padilla · CC BY-SA · iNaturalist
Equation

As printed (Table 2, p. 12)

0.00165d2h

In this library's units, ready to compute (kg)

Foliage biomass = 0.00165 * D^2 * H
D
Diameter at breast height (1.3 m), cm
H
Total tree height, m

Equation as printed in the Table 2 system for this taxon; d is DBH in cm, h total height in m, output in kg dry mass. R² is the 10-fold cross-validation value.

Source
foliage (needles/leaves)
Output · Section 2.2
R2 0.64 (cross-validation)
R² · Table 2, p. 12
(108)
Trees measured · Table 1
Trees measured
108
DBH range
8.5–43.1 cm
Height range
6–18.8 m
R²
0.64
Method
Power-law component equations fitted simultaneously by generalized method of moments (additive system)
Where
Durango, Sierra Madre Occidental
Last checked
2026-11-02
Calculate
Height from
7.92
Foliage biomass (kg)
3.722
Carbon (kg), ×0.47
13.65
CO₂e (kg), ×44/12
Fitted DBH range05101520253035510152025303540DBH (cm)Foliage biomass (kg)Foliage biomass

Shaded: the DBH range the model was fitted on. Other inputs held at the values above.

Checks this equation passes

On every build, the library's form and the paper's own form (in its units) must both give these values within 1%.

InputsExpectedWe getFrom
D = 20, H = 127.927.92Computed from the printed form
computed from the Table 2 equation
D = 35, H = 1836.436.4Computed from the printed form
computed from the Table 2 equation

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